C# change string value to be next value in alphabetical order

Question

So this is what i'm trying to do. I have a string alphaCode, and what i simply want to do is increase from letter A to letter B. I did a way that assigned each letter an int and then did int++, but i'm assuming there has to be a better way.

string alphaCode = "a"

result = "b"

Answer 1

string GetNextCode(string alphaCode)
{
    Debug.Assert(alphaCode.Length == 1 && Regex.IsMatch(alphaCode, "[a-yA-y]"));

    var next = (char) (alphaCode[0] + 1);
    return next.ToString();
}

Assert is there just to communicate intentions - i.e. that I did understand your requirements right. It is even somewhat redundant.

Answer 2

If you use a char type you can do it like this:

char alphaChar = 'a';
Console.WriteLine(alphaChar++);
Console.WriteLine(alphaChar++);
Console.WriteLine(alphaChar++);
Console.WriteLine(alphaChar++);
Console.WriteLine(alphaChar++);
Console.WriteLine(alphaChar++);
Console.WriteLine(alphaChar++);